Comparative Synthesis of Cr/TiO2 and Cr/ZrO2 Nanocatalysts via Impregnation and Coprecipitation Methods Used in Ethylene Production from Ethane

The catalytic performance of Cr/ZrO2 and Cr/TiO2 catalysts, prepared by two different methods,coprecipitation and coprecipitation-impregnation, were examined in the oxidative dehydrogenation of ethane toethylene using CO2 as an oxidant. Physicochemical characterization such as XRD, FESEM, EDX, and BET wereperformed to explore the correlation of catalytic performance with physicochemical properties of the catalysts.Catalytic tests show that Cr-based catalysts prepared by coprecipitation e.i. Cr/ZrO2 (P) and Cr/TiO2 (P)have higherethylene yield in comparison to those prepared by coprecipitation-impregnation one and among all the samples,Cr/ZrO2 (P) has highest ethylene yield (43.17%).

Keywords:

Cr/TiO2 , Cr/ZrO2 , Impregnation , Coprecipitation , Ethylene